December weather forecast
Jamaica Plain, MA

Share

Weather in December

The first month of the winter, December, is still a cold month in Jamaica Plain, Massachusetts, with an average temperature ranging between max 39.6°F (4.2°C) and min 29.3°F (-1.5°C).

Temperature

The commencement of December involves a temperature shift, with the average high-temperature dropping from a frosty 49.5°F (9.7°C) in November to an icy 39.6°F (4.2°C). In Jamaica Plain, in December, the average low-temperature is a freezing cold 29.3°F (-1.5°C).

Humidity

In December, the average relative humidity is 76%.

Rainfall

In Jamaica Plain, during December, the rain falls for 5.6 days and regularly aggregates up to 0.55" (14mm) of precipitation. Throughout the year, in Jamaica Plain, there are 81.8 rainfall days, and 5.51" (140mm) of precipitation is accumulated.

Snowfall

January through May, November and December are months with snowfall. December is the month with the most snowfall in Jamaica Plain. Snow falls for 2.7 days and accumulates 0.71" (18mm) of snow.

Daylight

December has the shortest days of the year in Jamaica Plain, with an average of 9h and 6min of daylight.
On the first day of December, sunrise is at 6:54 am and sunset at 4:13 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 4:22 pm EST.

Sunshine

In Jamaica Plain, Massachusetts, the average sunshine in December is 4.9h.

UV index

The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for average individuals.
Note: During December, 2 as the daily maximum UV index converts into the following advice:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Boost your sun resistance with garments that are densely woven yet spacious. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
[Resources]

Frequently asked questions

How cold is it in Jamaica Plain in December?

In Jamaica Plain, in December, the average high-temperature is 39.6°F (4.2°C), and the average low-temperature is 29.3°F (-1.5°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which factors the actual air temperature with the relative humidity, in July is appraised at 86°F (30°C).

What is the average humidity in December in Jamaica Plain?

In December, the average relative humidity in Jamaica Plain is 76%.

How much does it rain in Jamaica Plain in December?

In Jamaica Plain, in December, during 5.6 rainfall days, 0.55" (14mm) of precipitation is typically accumulated.

What is the snowiest month in Jamaica Plain?

December is the month with the most snowfall in Jamaica Plain. Snow falls for 2.7 days and accumulates 0.71" (18mm) of snow.

How much does it snow in Jamaica Plain in December?

In December, in Jamaica Plain, Massachusetts, it is snowing for 2.7 days. Throughout December, 0.71" (18mm) of snow is accumulated.

What is the month with the shortest days in Jamaica Plain?

The month with the shortest days in Jamaica Plain, Massachusetts, is December, with an average of 9h and 6min of daylight.

What is the average length of the day in December in Jamaica Plain?

In December, the average day length is 9h and 9min.

When are sunrise and sunset in December in Jamaica Plain?

In December, on the first day of the month, sunrise is at 6:54 am and sunset at 4:13 pm. On the last day of the month, in Jamaica Plain, sunrise is at 7:13 am and sunset at 4:22 pm EST.

How many hours of sunshine does Jamaica Plain have in December?

In Jamaica Plain, Massachusetts, the average sunshine duration in December is 4.9h.

What is the month with the lowest UV index in Jamaica Plain?

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Jamaica Plain.

What is the UV index intensity in December in Jamaica Plain?

In Jamaica Plain, Massachusetts, the average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Jamaica Plain, MA

Average temperature in December - Jamaica Plain, MA
  • Average high temperature in December: 39.6°F

The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (33.8°F).

  • Average low temperature in December: 29.3°F

The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).

[Resources]

Average pressure in December
Jamaica Plain, MA

Average pressure in December - Jamaica Plain, MA
  • Average pressure in December: 30.03"Hg

The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

[Resources]

Average wind speed in December
Jamaica Plain, MA

Average wind speed in December - Jamaica Plain, MA
  • Average wind speed in December: 9mph

The windiest month (with the highest average wind speed) is January (9.5mph).
The calmest month (with the lowest average wind speed) is August (6mph).

[Resources]

Average humidity in December
Jamaica Plain, MA

Average humidity in December - Jamaica Plain, MA
  • Average humidity in December: 76%

The months with the highest relative humidity are January and February (77%).
The month with the lowest relative humidity is April (69%).

[Resources]

Average rainfall in December
Jamaica Plain, MA

Average rainfall in December - Jamaica Plain, MA
  • Average rainfall in December: 0.55"

The wettest month (with the highest rainfall) is November (0.63").
The driest month (with the least rainfall) is September (0.2").

[Resources]

Average rainfall days in December
Jamaica Plain, MA

Average rainfall days in December - Jamaica Plain, MA
  • Average rainfall days in December: 5.6 days

The month with the highest number of rainy days is July (9.6 days).
The month with the least rainy days is January (4.3 days).

[Resources]

Average snowfall in December
Jamaica Plain, MA

Average snowfall in December - Jamaica Plain, MA
  • Average snowfall in December: 0.71"

The month with the highest snowfall is December (0.71").
The months with the least snowfall are June, July, August, September and October (0").

[Resources]

Average snowfall days in December
Jamaica Plain, MA

Average snowfall days in December - Jamaica Plain, MA
  • Average snowfall days in December: 2.7 days

The month with the highest number of snowfall days is January (4.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

[Resources]

Average daylight in December /
Average sunshine in December
Jamaica Plain, MA

Average daylight in December / Average sunshine in December - Jamaica Plain, MA
  • Average daylight in December: 9h and 1min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in December: 4h and 5min

The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

[Resources]

Average sunshine days in December
Jamaica Plain, MA

Average sunshine days in December - Jamaica Plain, MA
  • Average sunshine days in December: 23 days

The month with the most sunshine days is January (23.5 days).
The month with the least sunshine days is June (17.4 days).

[Resources]

Average UV index in December
Jamaica Plain, MA

Average UV index in December - Jamaica Plain, MA
  • Average UV index in December: 2

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

[Resources]

Average cloud cover in December
Jamaica Plain, MA

Average cloud cover in December - Jamaica Plain, MA
  • Average cloud cover in December: 47

The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 32).

[Resources]

Average visibility in December
Jamaica Plain, MA

Average visibility in December - Jamaica Plain, MA
  • Average visibility in December: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

[Resources]

Jamaica Plain, Massachusetts, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location